Systematic Parasitology (Syst Parasitol )

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Systematic Parasitology publishes papers on the systematics taxonomy and nomenclature of the following groups: Nematoda (including plant-parasitic) Monogenea Digenea Cestoda Acanthocephala Aspidogastrea Cestodaria Arthropoda (parasitic copepods hymenopterans mites ticks etc.) Protozoa (parasitic groups) and parasitic genera in other groups such as Mollusca Turbelleria etc. Systematic Parasitology publishes fully illustrated research papers brief communications and fully illustrated major revisions. In order to maintain high standards all contributors describing new taxa are asked to state clearly where the holotype is deposited and to make paratypes available for examination by the referees. It is recognized that in some cases this may cause problems for the authors but it is hoped that by adhering to this rule authors may be protected against rapid synonymy of their taxa and the types will be preserved for posterity.

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Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: A new cucullanid nematode, Dichelyne (Dichelyne) breviculus n. sp., collected from the intestine of the goatee croaker Dendrophysa russelii (Cuvier) (Perciformes: Sciaenidae), the burrowing goby Trypauchen vagina (Bloch & Schneider) and the tropical sand goby Acentrogobius caninus (Valenciennes) (Perciformes: Gobiidae) in the South China Sea, is described using both light and scanning electron microscopy. The new species differs from its congeners in the size of body (2.16-2.96 mm in male), the position of the excretory pore and deirids, the length of the spicules (0.90-1.32 mm, representing 32.4-51.9% of body length), the arrangement of the caudal papillae and the morphology of the tail. In addition, in order to primarily assess the validity of the new species genetically, the specimens of D. breviculus n. sp. collected from the three different hosts were also characterised using molecular methods by sequencing and analysing ribosomal [small ribosomal subunit (18S rDNA) and internal transcribed spacer (ITS)] and mitochondrial [cytochrome c oxidase subunit 1 (cox1)] target regions. The molecular analyses support the validity of the new species based on the morphological observations.
    Systematic Parasitology 10/2014; 89(2):107-16.
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    ABSTRACT: Large-tailed echinostomatid cercariae of the genus Petasiger Dietz, 1909 (Digenea: Echinostomatidae) from the planorbid snails Gyraulus albus (Müller) and Planorbis planorbis (L.) collected in Germany and the Czech Republic and metacercariae from Gasterosteus aculeatus L. (Gasterosteiformes: Gasterosteidae) collected in Canada are characterised morphologically and molecularly. The rediae, cercariae and metacercariae are described in detail and compared with the existing data on the larval stages of Petasiger spp. Comparative molecular analyses using 28S rDNA and nad1 mitochondrial sequences supported the distinct status of four species of Petasiger. Molecular and morphological evidence for their distinction and an updated key to the known large-tailed cercariae of Petasiger from the Palaearctic are provided.
    Systematic Parasitology 10/2014; 89(2):153-66.
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    ABSTRACT: A new subgenus Neotomobia n. subg. (Acariformes: Myobiidae: Radfordia) is established for species parasitising rodents of the subfamily Neotominae (Rodentia: Cricetidae): Radfordia subuliger Ewing, 1938 (type-species), Radfordia eremici Fain & Bochkov, 2002, Radfordia neotomae Jameson & Whitaker, 1975 and Radfordia hamiltoni Jameson & Whitaker, 1975. Three new species are described: Radfordia peromyscus n. sp. from Peromyscus megalops Merriam from Mexico, Radfordia onychomys n. sp. from Onychomys leucogaster (Wied-Neuwied) from the USA and Radfordia megadontomys n. sp. from Megadontomys thomasi (Merriam) from Mexico.
    Systematic Parasitology 10/2014; 89(2):91-100.
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    ABSTRACT: A new microsporidian species is described from farmed red sea bream Pagrus major (Temminck & Schlegel) (Teleostei: Sparidae). Large numbers of spherical whitish xenomas were observed throughout the visceral organs of the host. Histological examination showed that the microsporidia caused several xenomas that were embedded in the intestinal muscularis externa or submucosa. Light and transmission electron microscopy examination of the spores also revealed morphological features typical of species of Glugea Thélohan, 1891. This microsporidian parasite has two different types of mature spores: microspores and macrospores. The spores are elongate-ovoid, with a large posterior vacuole. The polaroplast is bi-partite, with anterior and posterior parts comprising densely packed lamellae and loose membranes, respectively, and occupies approximately the anterior half of the spore. The polar filament is anisofilar, with 12-13 coils in a single layer almost touching the posterior spore wall. Comparison of the small subunit rDNA sequences revealed 92.7-98.1% identity with the sequences available from other Glugea spp. from piscine hosts. Phylogenetic analysis demonstrated that the microsporidian species studied clustered within the Glugea clade with strong support. Based on the differences in the morphological characteristics and molecular data, the microsporidian infecting P. major is considered to represent a species new to science, Glugea pagri n. sp.
    Systematic Parasitology 10/2014; 89(2):175-83.
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    ABSTRACT: The species Helicometra boseli Nagaty, 1956 is redescribed from the holocentrid Sargocentron spiniferum (Forsskål) off New Caledonia. It is characterised by a short forebody, long cirrus-sac, reaching well into the hindbody, and undulating lateral margins. Stenopera rectisaccus Fischthal & Kuntz, 1964 is considered a synonym. The status of the four species of Helicometra Odhner, 1902 from holocentrids is discussed. Three of the Helicometra species reported from holocentrids exhibit characteristics used to erect the genus Stenopera Manter, 1933, which is currently considered a junior synonym of Helicometra.
    Systematic Parasitology 09/2014; 89(2):167-73.
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    ABSTRACT: Molecular and morphometric investigations were conducted on the actinosporean morphotypes of myxosporeans surveyed in oligochaetes of Lake Balaton and Kis-Balaton Water reservoir. Oligochaetes belonging to the species Isochaetides michaelseni Lastočkin and Branchiura sowerbyi Beddard as well as to the genera Nais Dujardin, Dero Müller and Aeolosoma Ehrenberg were studied during an 18-month period. Actinosporeans were obtained exclusively from I. michaelseni (7,818 specimens) with very low prevalence (0.01-0.06%). Four new actinosporean morphotypes of the collective groups raabeia (2 types), synactinomyxon (1 type) and neoactinomyxum (1 type) were found and described, including the first synactinomyxon collective group from Hungarian biotopes and a new raabeia morphotype. Except for Synactinomyxon type 1, the 18S rDNA analysis revealed that the spores did not match any myxospore entity found in the GenBank.
    Systematic Parasitology 07/2014; 88(3):245-59.
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    ABSTRACT: Bathycreadium brayi n. sp. is described based on specimens collected from the deep-sea greater forkbeard Phycis blennoides (Brünnich) (Gadiformes: Phycidae) in the Western Mediterranean. The new species is distinguished from B. flexicolle Kabata, 1961, B. elongata (Maillard, 1970) and B. nanaflexicolle Dronen, Rubec & Underwood, 1977 by the much smaller size of the body and most organs, the large (in relation to body length and width) ventral sucker and the distinctly more anterior extent of the vitelline fields and from B. biscayense Bray, 1973 in having a narrower body, longer forebody and oesophagus, distinctly smaller ventral sucker and sucker width ratio and the shape of the gonads. Re-examination of the type-material of B. biscayense revealed that the original description of this species is based on composite material. A redescription of B. biscayense based on adult specimens from its type-host, Trachyrincus scabrus (Rafinesque), and new data based on the re-examination of the type-specimens of B. flexicolle and B. elongata are also provided.
    Systematic Parasitology 07/2014; 88(3):233-44.
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    ABSTRACT: Recent molecular phylogenetic studies on fish tapeworms of the genus Caryophyllaeus Gmelin, 1790 (Cestoda: Caryophyllidea), parasites of cyprinid fishes in the Palaearctic Region, have revealed unexpected phenotypic plasticity that seems to be related to definitive hosts. In the present paper, Caryophyllaeus brachycollis Janiszewska, 1953 is redescribed and its two morphotypes are circumscribed on the basis of newly-collected specimens. Morphotype 1 from barbels [Barbus spp. including the type-host Barbus barbus (L.); Barbinae] and chubs (Squalius spp.; Leuciscinae) is characterised by a more robust body with spatulate scolex, which is only slightly wider than a very short neck region, and the anterior position of the testes and vitelline follicles, which begin immediately posterior to the scolex. Specimens of Morphotype 2 from breams (Abramis spp., Ballerus spp. and Blicca spp.; Abraminae), which have been previously misidentifed as Caryophyllaeus laticeps (Pallas, 1781), possess a more slender body with a flabellate scolex, which is much wider than a long neck, and the first testes begin at a considerable distance posterior to the first vitelline follicles. Despite conspicuous differences in the scolex morphology and the anterior extent of the testes and vitelline follicles, both morphotypes are identical in the morphology of the posterior end of the body, in particular that of the cirrus-sac, which is large, thick-walled, elongate-pyriform, and contains a long cirrus, and in the distribution of the vitelline follicles, which surround medially vas deferens near the cirrus-sac. A specimen of Morphotype 1 from B. barbus from the Argens River, France, is designated as neotype of C. brachycollis. The presence of phenotypic plasticity in morphological characteristics previously used for differentiation of species of Caryophyllaeus may confound species identification, which is crucial for biodiversity, ecological and evolutionary studies. To avoid these potential problems, combination of morphological and molecular data is strongly recommended.
    Systematic Parasitology 06/2014; 88(2):153-66.
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    ABSTRACT: Six species of Lethrinitrema Lim & Justine, 2011, including two new taxa, are described from the gills of Lethrinus nebulosus (Forsskål) from the South China Sea. Lethrinitrema nebulosum n. sp. differs from all other members of the genus in possessing a copulatory organ with a short, distally recurved tube, a cup-shaped base and a thin accessory piece, arising from distal end of tube, junction inconspicuous. Lethrinitrema zhanjiangense n. sp. can be distinguished from its congeners by possessing a copulatory organ with a C-shaped tube, a cup-shaped base and without accessory piece. Lethrinitrema grossecurvitubum (Li & Chen, 2005) n. comb. and Lethrinitrema austrosinense (Li & Chen, 2005) n. comb., previously included in Haliotrema Johnston & Tiegs, 1922, are transferred to Lethrinitrema and redescribed with additional details, including the intestinal caeca that unite posterior to gonads and continue posteriorly as two diverticula, and the elongate tubular distal end of each haptoral reservoir bifurcating prior to entering a superficial lateral groove on each side of the ventral anchor. The sclerotised parts of two unidentified species of Lethrinitrema are also described. Lethrinitrema sp. 1 differs from the other Lethrinitrema spp. in possessing a male copulatory organ consisting of a short tapered tube with a robust cup-shaped base and in lacking accessory piece. Lethrinitrema sp. 2 differs from its congeners in possessing a copulatory organ comprised of a short slender tube and without accessory piece, delicate ventral and dorsal bars, and poorly developed outer roots of the anchors. Sequences of partial 28S rDNA (domains D1-D2) and complete 18S rDNA for 27 dactylogyrids including five species of Lethrinitrema, i.e. Lethrinitrema fleti (Young, 1968) Lim & Justine, 2011, L. nebulosum, L. zhanjiangense, L. grossecurvitubum and Lethrinitrema sp. 1 were used to assess the monophyly of Lethrinitrema which was supported by high bootstrap values.
    Systematic Parasitology 06/2014; 88(2):119-39.
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    ABSTRACT: We collected faecal samples from 24 dusky rice rats, Melanomys caliginosus (Tomes) (Rodentia: Cricetidae: Sigmodontinae), in a Biological Reserve in Costa Rica, and found three (12.5%) to be infected with a species of Eimeria Schneider, 1875, which we describe here as new. Sporulated oöcysts of Eimeria caliginosa n. sp. are almost spheroidal and measure 16-21 × 17-20 (mean 19.6 × 18.2) μm; micropyle, oöcyst residuum and polar granule are absent. Sporocysts are ovoidal, 9-13 × 6-8 (mean 11.2 × 6.7) μm, with small Stieda and sub-Stieda bodies present, but a para-Stieda body is absent; the sporocyst residuum is a compact mass of c.11-15 granules, c.5 μm wide. Sporozoites are crescent-shaped, 5-8 × 2-3 (mean 6.8 × 2.4) μm. This is the third species of Eimeria described from the genus Melanomys Thomas.
    Systematic Parasitology 06/2014; 88(2):181-4.
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    ABSTRACT: Quazithelazia rostrata n. sp. from Ceyx erithaca (L.) (type-host) and Alcedo euryzona Temminck (Coraciiformes, Alcedinidae) and Q. alata n. sp. from Enicurus ruficapillus Temminck (Passeriformes, Muscicapidae) are described from vicinities of Gombak Biological Station, Selangor, Malaysia; both species are parasitic under the koilin lining of the gizzard. Paratypes of Schistogendra pelargopsis Nandi, De & Majumdar, 1985, a parasite of Pelargopsis capensis (L.) (Alcedinidae) from India, are redescribed and the species is recognised as a junior synonym of the type-species of Quasithelazia, Q. tenuis Maplestone, 1932 (new synonymy), a species originally described from Halcyon smyrnensis (L.) (Alcedinidae) in India. An amended diagnosis of the genus Quasithelazia Maplestone, 1932 is proposed. Currently, this genus includes eight species occurring in the Old World, six of them parasitic in kingfishers (Alcedinidae) and two species parasitic in flycatchers (Muscicapidae). These include, inter alia, Q. halcyoni n. comb. for Viktorocara halcyoni Ryzhikov & Khokhlova, 1964 from Halcyon smyrnensis and H. pileata (Boddaert) in Vietnam and the Russian Far East, Q. microcordonis n. comb. for Rusguniella microcordonis Schmidt & Kuntz, 1971 from Halcyon coromanda major (Temminck & Schlegel) in Taiwan and Q. multipapillata n. comb. for Schistogendra multipapillata Zhang, 1993 from Tarsiger cyanurus (Pallas) (Muscicapidae) in China. Comparative morphological data for Quasithelazia spp. are presented. Schistogendra oligopapillata Zhang & An, 2002 from domestic ducks in China is considered a species incertae sedis.
    Systematic Parasitology 06/2014; 88(2):103-17.
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    ABSTRACT: Meggittina numida n. sp. (Cyclophyllidea: Catenotaeniidae: Skrjabinotaeniinae) is described from the small intestine of the Shaw's jird Meriones shawi (Duvernoy) (Rodentia, Muridae, Gerbillinae) trapped in central Tunisia. The new species can be distinguished from the four other members of Meggittina Lynsdale, 1953 by the high number of proglottids (8-25 vs max. 6) and by the elongated strobila (8.2-60 mm in length vs max. 5.6 mm). M numida n. sp. further differs from M. cricetomydis (Hockley, 1961) in the direction of gravid proglottids; from M. baeri Lynsdale, 1953 in having narrower and much longer strobila; from M. aegyptiaca (Wolfgang, 1956) in the greater number of testes and the larger cirrus-sac; and from M. gerbilli in the position of the genital pore. The diagnosis of Meggittina is amended in order to include the most specific features of M. numida n. sp. as follows: strobila consisting of a small scolex, wide neck and one to twenty-five proglottids. This is the first species of Meggittina described from Tunisia. The taxonomic relationships of Meggittina spp. are discussed in the light of the description of the new species.
    Systematic Parasitology 06/2014; 88(2):167-74.

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